Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) narrates: the Prophet (peace and blessings be upon him) said: "O Banu Abd Manaf! If one day you are given this responsibility, do not prevent anyone performing tawaf of this House at any hour of the night or the day."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1554